Electric switch.



G. E. AVERY.

ELECTRIC SWITCH. APPLIOATION IILED APR.15, 1913.

1,078,404. P afiented'Noi 11, 1913.

UNITED STATES PATENT OFFICE.

ananas .AVEBYQO-F JERSEY our, NEW JERSEY, ASSIGNOR T0 MANHATTAN -x= Ennc'rmoALsUrrLY- COMPANY, or NEW Yon- N. Y., a CORPORATION on NEW To all who-m z'rimay concern Be it known that 1, CHARLES E. AVERY, a citizen of the'United States of America, and residing'at Jersey City, in the county of Hudson and State of New Jersey, have invented a certain new and useful Improvement in Electric Switches, of which the fol lowing is a specification.

My invention relates to electric switches and particularly to push button switches,

the objectof my invention being to provide a push button of improved construction possessing the advantages hereafter pointed out.

In the accompanying drawing, Figure 1 switch in which my invention is shown embodied in one form; and Fig. 2 1s a dropped broken elevation of the push button parts shown assembled in F 1g. 1.

The switch here shown 1s of the type commonly employed for operating electric door bells, and to which the invention is particularly applicable, although it is not limited to this utility. This switch is provided as usual-with a metal base plate 5, by means of which it may be mounted on the frame Ofafi door or other suitablesupport. An insulating disk 6 which is secured in any desired manner to the plate 5, carries on its upper face the wire terminals 7 and 8. From the latter extend the spring bands 9 and 10 which form the switching contacts, normally separated but adapted to be brought into contact by the depression of the push button. The casing 11 which incloses the switch mechanism is provided with a collar 12 to guide the push button and is preferably secured to the base plate 5 by any suit able means, such for instance as screws 13. It will be understood of course that the base plate is electrically insulated as usual from all conducting parts.

, The push button comprises a metallic cup 11 flared at its upper edge 15 and having securing claws 16 formed by punching down -ard the central portion of its base. The diameter of the body of the cup is such that it slides freely but snugly .in the collar 12- of the casing. A hood 1T fits over the cup and its depending skirt 18 has a sliding fit oriside the neck 12. The hood and cup are secured rigidly together by any suitable Specification of LettersIatent.

.ELEoTRIo swrron.

' Patented Nov. 11, 1913.

- Application filed April 15; 1913. Serial No. 761,266.

means, as by staking the rim 15 of the cup to the hood. A button 19 of insulating material is secured to thelower end of the cup in any suitable manner, as by spreading the claws 16 beneath the shoulder 20 formed in the central perforation 21 of the button, Tlns'button rests upon the spring terminal 10 and is of such diameter that its upper face engages the casing 11 against which it is normally pressed by the terminal 10.

In normal position the butt-on is pushed out by the terminal 10, into the position shown in Fig. 1. In this position the lower edge of the skirt 1S overlaps the upper edge of the neck 12 cf the casing and serves to exclude moisture from the interior of the switch, which is frequently installed in'posi- .tions such that it is exposed to the elements. To actuate the switch, the button is pushed in until the terminals 9 and 10 contact, thus completing the bell circuit. In this position the collar 12 occupies the space 22 afforded by the lost motion connection between the button and the casing, and which is, of course, sufficient to permit the eontact lO to be pressed into firm engagement with the contact 9.

The construction illustrated is but an exemplary embodiment of my invention and various modifications will readily suggest themselves. That shown however is simple and inexpensive, as it must be commercially for this type of switch. while at the same time efiicient and serving, through the skirt of the hood, to keep moisture from the interior of the switch.

I claim as my invention 1. In a push switch. a push button-comprising a cup-shaped body, a hood secured over he open end thereof and provided with a skirt spaced from the body of the cup, in combination with a perforated insulating disk, and claws struck from the bottom of said cup-shaped body and engaging within the perforation of the disk, for the purpose described.

2. In a push switch. a push button comprising a cup-shaped body of sheet metal outwardly flared at its open end, a hood overlying said open end of the cup-shaped body and secured to the outwardly flared portion thereof, said hood having a downwardly projecting skirt spaced from the body of the cup in combination with a disk In testimony whereof I have I signed my of insulating material centrally perforated name to this specification, in tbe presence of and undercut, andclaws struck downward two subscribing witnesses. s,

from said cupshaped body. and spread out CHARLES E. VERY. win-(11y beneath the edge of said undercut Witnesses: V

central perforation to engage said disk, sub- WALTER ABBE,

stantiallyes described. L. H. GROTE. 

